ALEXANDER A. AIMETTE wrote:
>
> FIRST TO THANK THOSE WHO RESPONDED TO MY QUESTIONS CONCERNING GLASS
> 3-500Z TUBE AMPLIFIERS VERSUS CERAMIC QRO AMPS. VERY INFORMATIVE AND
> AGAIN THANK YOU TO THOSE WHO WERE KIND ENOUGH TO TAKE THE TIME TO
> ANSWER.
>
> I HAVE ANOTHER QUESTION.
>
> I AM TESTING/ USING AN ALPHA 78 WITH A VIEW TOWARDS BRINGING IT DOWN TO
> V47KP AS THE STATION AMPLIFIER. I (VELEIVE IT OR NOT) READ THE MANUALS
> AND SEE THAT THE AMPLIFIER IS TO BE USED AT/ABOUT 1600V (CW SETTING) WITH
> A MAX Ip OF ABOUT 0.7 AMP AND A MAX GRID CURRENT OF ABOUT 100MA( ACTUAL
> ABOUT 75MA). THIS GIVES ABOUT 1200 W OUT WITH A REFLECTED POWER (ALL
> BIRD MEASUREMENTS) OF ABOUT 200 WATTS. TUBES ARE OF COURSE 8873S.
> THE SSB SETTING VOLTAGE IS ABOUT 2300 AND RECOMMENDED MAX (OBSERVED)
> SWING ON IP VOICE PEAKS IS SUGESSTED AS 0.47 AMPS.
> THIS IS ALL NEATLY DISCUSSED IN THE MANUAL WITH REFERANCE TO THE FCC MAX
> POWER (IN 1979) OFF 1000W CW AND 2000W PEP.
> QUESTION: CAN I SAFELY RUN 1500 W OUTPUT PRESUMING I DO NOT EXCEED THE
> 1.0 AMP Ip MAX CURRENT AT 2300 V AND THE 100MA GRID INMPUT CURRENT. i
> GUESS I AM REALLY ASKING IF THIS AMP IS RATED ONLY FOR 1000W OR CAN/ARE
> THESE AMPS NOW RUN AT 1500 W OUT CW/SSB.
> QUESTION: HOW RELAIBLE IS THIS AMP HISTORICALLY? ANY BAD COMPONENTS YOU
> WOULD AUTOMATICALLY CHANGE BEFORE TAKING IT SOUTH? hOW ABOUT SPARES?
> ARE THERE ANY COMPONENTS YOU WOULD TAKE WITH YOU BESIDES FUSES ET ALL?
>
> I HAVE HEARD THAT SOME OPS PUT A SWAMPING R TO AVOID INADVERTANTLY
> ZAPPING THE RIG WITH 100 WATTS. ANY INFO/EXPERIENCE.
>
> THE AMP IS AFTER ALL 18 YEARS OLD. AND APPEARS TO WORK WELL AND I AM NOT
> ABOUT TO OVERLOAD/ABUSE THIS AMP UNTIL I WON IT.
>
> aNY INFO HOPEFULLY BASED ON EXPERIENCE AS OPPOSED TO THEORY WOULD BE
> APPRECIATED.
>
> jUST WANT TO SAY THAT THIS IS THE MOST INTERESTING REFLECTOR OF ALL.
>
> THANK YOU ALL ONCE AGAIN 73 ALEX W2OX/V47KPTHANKS AGAIN
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